<template>
  <view class="cart-container" v-if="cartItem.length > 0">
    <!-- 收货地址 -->
    <my-address></my-address>
    <!-- 购物车商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 描述文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <uni-swipe-action>
      <block v-for="(item, index) in cartItem" :key="index">
        <uni-swipe-action-item
          :right-options="swipeOptions"
          @click="swipeActionClickHandler(item, $event)"
        >
          <view class="goods-item">
            <!-- 商品左侧图片区域 -->
            <view class="goods-item-left">
              <radio
                @click="updateState(item)"
                :checked="item.goods_state"
                color="#C00000"
              ></radio>
              <image
                :src="item.goods_small_logo || defaultImage"
                class="goods-pic"
              ></image>
            </view>
            <!-- 商品右侧信息区域 -->
            <view class="goods-item-right">
              <!-- 商品标题 -->
              <view class="goods-name">{{ item.goods_name }}</view>
              <view class="goods-info-box">
                <!-- 商品价格 -->
                <view class="goods-price">{{
                  item.goods_price | formatPrice
                }}</view>
                <!-- 商品数量 -->
                <uni-number-box
                  :min="1"
                  :value="item.goods_count"
                  @change="changeGoodsCount(item, $event)"
                ></uni-number-box>
              </view>
            </view>
          </view>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 底部操作栏 -->
    <my-checkout></my-checkout>
  </view>
  <!-- 购物车无商品时 -->
  <view class="empty-cart" v-else>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
import badge from "@/mixins/badge";
import { mapState, mapMutations } from "vuex";
import MyAddress from "@/components/my-address";
import MyCheckout from "@/components/my-checkout.vue";
export default {
  mixins: [badge],
  components: {
    MyAddress,
    MyCheckout,
  },
  data() {
    return {
      // 1.占位图片
      defaultImage:
        "https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png",
      // 2. 商品左滑展示的内容
      swipeOptions: [
        {
          text: "删除", // 显示的按钮文本
          style: {
            backgroundColor: "#C00000", // 按钮的背景颜色
          },
        },
      ],
    };
  },
  computed: {
    ...mapState("cart", ["cartItem"]),
  },
  methods: {
    ...mapMutations("cart", ["updateState"]),
    /**
     * 1. 改变商品的购买数量
     */
    changeGoodsCount(goods, num) {
      // console.log(goods, num);
      this.$store.commit("cart/updateCount", { goods, num });
    },
    /**
     * 2. 商品左滑并点击
     */
    swipeActionClickHandler(goods, e) {
      // console.log(goods, e);
      this.$store.commit("cart/removeGoods", goods);
    },
  },
};
</script>

<style lang="scss" scoped>
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 300rpx;

  .tip-text {
    font-size: 24rpx;
    color: gray;
    margin-top: 30rpx;
  }
}

.cart-container {
  padding-bottom: 100rpx;
}
.cart-title {
  height: 80rpx;
  display: flex;
  align-items: center;
  font-size: 28rpx;
  padding-left: 10rpx;
  border-bottom: 1rpx solid #efefef;
  .cart-title-text {
    margin-left: 20rpx;
  }
}

.goods-item {
  display: flex;
  padding: 20rpx 10rpx;
  border-bottom: 1rpx solid #f0f0f0;
  width: 750rpx;
  box-sizing: border-box;

  .goods-item-left {
    margin-right: 10rpx;
    display: flex;
    justify-content: space-between;
    align-items: center;

    .goods-pic {
      width: 200rpx;
      height: 200rpx;
      display: block;
    }
  }

  .goods-item-right {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;

    .goods-name {
      font-size: 26rpx;
    }

    .goods-info-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .goods-price {
      font-size: 32rpx;
      color: #c00000;
    }
  }
}
</style>